Even in normal winter conditions, at anything below 7C, they are much better at gripping on cold roads - even dry and cleared, treated ones - because their rubber compound is softer and sticky in the cold.
While traction batteries are heavy, and mass is bad for acceleration and agility, the lower center-of-gravity often compensates with higher levels of cornering, especially when a car wears rubber like the Signature Performance edition's sticky 21-inch summer tires.